Menene bambance-bambance tsakanin TIG (DC) da TIG (AC)?

walda kai tsaye TIG (DC) shine lokacin da halin yanzu ke gudana ta hanya ɗaya kawai.Idan aka kwatanta da AC (Alternating Current) TIG walda na halin yanzu da zarar gudana ba zai tafi sifili ba har sai walda ya ƙare.Gabaɗaya TIG inverters za su iya walda ko dai DC ko AC/DC waldi tare da ƴan injuna kasancewar AC kawai.

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Ana amfani da DC don waldawar TIG Mild Karfe/Bakin abu kuma za a yi amfani da AC don walda Aluminium.

Polarity

Tsarin walda na TIG yana da zaɓuɓɓuka uku na walda na yanzu dangane da nau'in haɗin gwiwa.Kowace hanyar haɗi tana da fa'idodi da rashin amfani.

Kai tsaye Yanzu - Electrode Negative (DCEN)

Ana iya amfani da wannan hanyar walda don abubuwa da yawa.An haɗa fitilar walda ta TIG zuwa mummunan fitarwa na inverter walda da kuma aikin dawo da kebul zuwa ingantaccen fitarwa.

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Lokacin da aka kafa baka na halin yanzu yana gudana a cikin kewayawa kuma rarraba zafi a cikin baka yana kusa da 33% a cikin mummunan gefen baka (tushen walda) da 67% a cikin kyakkyawan gefen baka (yankin aikin).

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Wannan ma'auni yana ba da zurfin shigar baka na baka a cikin yanki na aiki kuma yana rage zafi a cikin lantarki.

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Wannan rage zafi a cikin na'ura mai ba da hanya tsakanin hanyoyin sadarwa yana ba da damar ƙarin na yanzu don ɗaukar ƙananan na'urori idan aka kwatanta da sauran hanyoyin haɗin polarity.Ana kiran wannan hanyar haɗin kai a matsayin madaidaiciyar polarity kuma ita ce haɗin da aka fi amfani da shi a walda na DC.

Kai tsaye Yanzu - Electrode Positive (DCEP)

Lokacin waldawa a cikin wannan yanayin TIG walda torch yana haɗa zuwa ingantaccen fitarwa na walda inverter da kuma aikin dawo da na USB zuwa mummunan fitarwa.

Lokacin da aka kafa baka a halin yanzu yana gudana a cikin kewayawa kuma rarraba zafi a cikin baka yana kusa da 33% a cikin mummunan gefen baka (yankin aikin) da 67% a cikin kyakkyawan gefen baka (tushen walda).

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Wannan yana nufin wutar lantarki ta kasance ƙarƙashin matakan zafi mafi girma don haka dole ne ya fi girma fiye da yanayin DCEN koda lokacin da halin yanzu ya yi ƙasa kaɗan don hana yawan zafi ko narkewa.Aikin yanki yana ƙarƙashin matakin ƙananan zafi don haka shigar da weld ɗin zai zama marar zurfi.

 

Ana kiran wannan hanyar haɗin kai da koma baya.

Har ila yau, da wannan yanayin tasirin ƙarfin maganadisu na iya haifar da rashin kwanciyar hankali da kuma wani al'amari da aka sani da arc busa inda baka zai iya yawo tsakanin kayan da za a yi walda.Hakanan yana iya faruwa a yanayin DCEN amma ya fi yawa a yanayin DCEP.

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Ana iya tambayar menene amfanin wannan yanayin lokacin walda.Dalilin shi ne cewa wasu kayan da ba na ƙarfe ba irin su aluminum a kan yanayin al'ada na al'ada suna samar da oxide a saman. Wannan oxide an halicce shi ne saboda yanayin iskar oxygen a cikin iska da kayan kama da tsatsa a kan karfe.Duk da haka wannan oxide yana da wuyar gaske kuma yana da matsayi mafi girma fiye da ainihin kayan tushe don haka dole ne a cire kafin a iya yin walda.

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Ana iya cire oxide ta hanyar niƙa, gogewa ko wasu tsabtace sinadarai amma da zaran aikin tsaftacewa ya ƙare, oxide ya sake fitowa.Saboda haka, da kyau za a tsabtace shi a lokacin walda.Wannan tasirin yana faruwa lokacin da halin yanzu ke gudana a cikin yanayin DCEP lokacin da kwararar lantarki zai rushe kuma ya cire oxide.Don haka ana iya ɗauka cewa DCEP zai zama kyakkyawan yanayin walda waɗannan kayan tare da irin wannan suturar oxide.Abin baƙin cikin shine saboda bayyanar da na'urar zuwa matsanancin zafi a wannan yanayin girman na'urorin zai zama babba kuma shigar da baka zai yi ƙasa da ƙasa.

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Maganin waɗannan nau'ikan kayan zai zama zurfin shigar baka na yanayin DCEN tare da tsaftace yanayin DCEP.Don samun waɗannan fa'idodin ana amfani da yanayin walda AC.

Alternating Current (AC) Welding

Lokacin waldawa a yanayin AC na yanzu wanda injin inverter ke bayarwa yana aiki tare da abubuwa masu kyau da mara kyau ko rabin hawan keke.Wannan yana nufin halin yanzu yana gudana ta hanya ɗaya sannan ɗayan a lokuta daban-daban don haka ana amfani da kalmar alternating current.Haɗin nau'i mai kyau guda ɗaya da ɗaya mara kyau ana kiransa zagaye ɗaya.

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Yawan lokutan da aka gama zagayowar a cikin daƙiƙa ɗaya ana kiransa mitar.A cikin Burtaniya mitar canjin halin yanzu da ke ba da hanyar sadarwa ta hanyar sadarwa shine kewayawa 50 a cikin sakan daya kuma ana nuna shi da 50 Hertz (Hz)

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Wannan yana nufin cewa halin yanzu yana canzawa sau 100 kowace daƙiƙa.Adadin zagayawa a cikin daƙiƙa guda (mita) a cikin daidaitaccen inji ana ƙididdige shi ta mitar mains wanda a cikin Burtaniya shine 50Hz.

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Yana da kyau a lura cewa yayin da mita ke ƙaruwa tasirin maganadisu yana ƙaruwa kuma abubuwa kamar su masu canji suna ƙara haɓaka aiki.Hakanan haɓaka mitar walda na yanzu yana dagula baka, yana inganta kwanciyar hankali kuma yana haifar da yanayin walda mai iya sarrafawa.
Koyaya, wannan ka'ida ce kamar lokacin walda a cikin yanayin TIG akwai wasu tasiri akan baka.

Rufin oxide na wasu kayan zai iya shafar igiyar AC sine wanda ke aiki azaman mai gyara yana hana kwararar lantarki.Ana kiran wannan da gyaran baka kuma tasirin sa yana sa a yanke ko kuma a karkatar da ingantaccen rabin zagayowar.Sakamakon ga yankin weld shine yanayin arc mara kyau, rashin aikin tsaftacewa da yiwuwar lalacewar tungsten.

Gyaran Arc na tabbataccen rabin zagayowar

Matsalolin Waveform na Yanzu (AC).

The Sine Wave

Tashin ruwa na sinusoidal ya ƙunshi ingantacciyar sigar ginawa har zuwa iyakarsa daga sifili kafin ya koma sifili (sau da yawa ana kiransa tudu).

Yayin da yake ƙetare sifili kuma halin yanzu yana canza alkibla zuwa matsakaicin ƙimarsa mara kyau kafin daga baya ya tashi zuwa sifili (sau da yawa ana kiransa kwari) zagayowar ɗaya ta ƙare.

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Yawancin tsofaffin salon TIG welders nau'in igiyar ruwa ne kawai.Tare da haɓaka inverter na walda na zamani tare da ƙarin na'urorin lantarki na zamani sun sami ci gaba akan sarrafawa da siffata nau'in igiyar igiyar AC da ake amfani da su don walda.

The Square Wave

Tare da haɓaka na'urorin walda na AC/DC TIG don haɗawa da ƙarin na'urorin lantarki an haɓaka ƙarni na injunan igiyar igiyar ruwa.Saboda wadannan lantarki controls giciye kan daga tabbatacce zuwa korau da kuma akasin haka za a iya yin kusan a cikin nan take wanda take kaiwa zuwa mafi tasiri halin yanzu a cikin kowane rabin sake zagayowar saboda dogon lokaci a iyakar.

 

Ingantacciyar amfani da makamashin filin maganadisu da aka adana yana haifar da sifofin igiyoyin ruwa waɗanda ke kusa da murabba'i sosai.Gudanar da hanyoyin samar da wutar lantarki na farko sun ba da damar sarrafa 'kalaman murabba'i'.Tsarin zai ba da damar sarrafa ingantaccen (tsaftacewa) da mara kyau (shigarwa) rabin hawan keke.

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Yanayin ma'auni zai zama daidai + tabbatacce kuma mara kyau rabin hawan keke yana ba da ingantaccen yanayin walda.

Matsalolin da za a iya fuskanta su ne cewa da zarar tsaftacewa ya faru a cikin ƙasa da lokaci mai kyau na rabin sake zagayowar to wasu daga cikin ingantaccen zagayen rabin sake zagayowar ba su da fa'ida kuma suna iya ƙara yuwuwar lalacewar wutar lantarki saboda tsananin zafi.Koyaya, wannan nau'in na'ura kuma zai sami ikon sarrafa ma'auni wanda ya ba da damar lokacin ingantaccen zagayen rabin zagayowar ya bambanta tsakanin lokacin zagayowar.

 

Matsakaicin Shiga

Ana iya samun wannan ta hanyar sanya ikon sarrafawa zuwa matsayi wanda zai ba da damar karin lokaci don ciyarwa a cikin mummunan zagaye na rabi tare da madaidaicin sake zagayowar rabi.Wannan zai ba da damar yin amfani da mafi girma na halin yanzu tare da ƙananan lantarki kamar ƙari

na zafi yana cikin tabbatacce (aiki).Haɓakar zafi kuma yana haifar da zurfin shiga lokacin walda a daidai saurin tafiya kamar daidaitaccen yanayin.
Rage yankin zafi da ya shafa da ƙarancin murdiya saboda kunkuntar baka.

 

Matsakaicin Tsaftacewa

Ana iya samun wannan ta hanyar sanya iko zuwa matsayi wanda zai ba da damar ƙarin lokaci don ciyarwa a cikin ingantaccen zagaye na rabi game da sake zagayowar rabi mara kyau.Wannan zai ba da damar yin amfani da halin yanzu mai aiki sosai.Ya kamata a lura cewa akwai lokacin tsaftacewa mafi kyau bayan haka ƙarin tsaftacewa ba zai faru ba kuma yiwuwar lalacewa ga lantarki ya fi girma.Tasiri a kan baka shine samar da wurin shakatawa mai tsafta mai tsafta tare da shiga mara zurfi.